Hi, I have seen a few posts about radiator cooling fans not coming on but I cannot seem to locate the temp sensor/switch.
When I am going up long/big hills in my Laika motorhome the temp gauge goes above half but returns to "normal" as soon as I going downhill or driving on the flat. I have tested both fans with a 12v source and they both work well. There is a black box on top of the radiator which contain the relays for the fans, they both seem OK. I can measure 12v on the positive side to chassis on each fan so looks like the negative is switched to ground via the relay which get a control voltage from the management system (wherever that is!) which in turn gets a "signal" from the temp sensor. I have read on other posts that the sensor is screwed to the radiator near the bottom hose, I cannot see one so now I am stuck. I think it has an Iveco engine fitted if that is any help.
Cheers,
Eric
When I am going up long/big hills in my Laika motorhome the temp gauge goes above half but returns to "normal" as soon as I going downhill or driving on the flat. I have tested both fans with a 12v source and they both work well. There is a black box on top of the radiator which contain the relays for the fans, they both seem OK. I can measure 12v on the positive side to chassis on each fan so looks like the negative is switched to ground via the relay which get a control voltage from the management system (wherever that is!) which in turn gets a "signal" from the temp sensor. I have read on other posts that the sensor is screwed to the radiator near the bottom hose, I cannot see one so now I am stuck. I think it has an Iveco engine fitted if that is any help.
Cheers,
Eric